| Author | Title | Year | Journal/Proceedings | Reftype | DOI/URL |
|---|---|---|---|---|---|
| Cattuto, C., Benz, D., Hotho, A. & Stumme, G. | Semantic Analysis of Tag Similarity Measures in Collaborative Tagging Systems | 2008 | Proceedings of the 3rd Workshop on Ontology Learning and Population (OLP3) | inproceedings | URL |
| Abstract: Social bookmarking systems allow users to organise collections of resources on the Web in a collaborative fashion. The increasing popularity of these systems as well as first insights into their emergent semantics have made them relevant to disciplines like knowledge extraction and ontology learning. The problem of devising methods to measure the semantic relatedness between tags and characterizing it semantically is still largely open. Here we analyze three measures of tag relatedness: tag co-occurrence, cosine similarity of co-occurrence distributions, and FolkRank, an adaptation of the PageRank algorithm to folksonomies. Each measure is computed on tags from a large-scale dataset crawled from the social bookmarking system del.icio.us. To provide a semantic grounding of our findings, a connection to WordNet (a semantic lexicon for the English language) is established by mapping tags into synonym sets of WordNet, and applying there well-known metrics of semantic similarity. Our results clearly expose different characteristics of the selected measures of relatedness, making them applicable to different subtasks of knowledge extraction such as synonym detection or discovery of concept hierarchies. | |||||
BibTeX:
@inproceedings{cattuto08-semantic,
author = {Cattuto, Ciro and Benz, Dominik and Hotho, Andreas and Stumme, Gerd},
title = {Semantic Analysis of Tag Similarity Measures in Collaborative Tagging Systems},
booktitle = {Proceedings of the 3rd Workshop on Ontology Learning and Population (OLP3)},
year = {2008},
url = {http://olp.dfki.de/olp3/}
}
|
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| Jäschke, R., Marinho, L., Hotho, A., Schmidt-Thieme, L. & Stumme, G. | Tag Recommendations in Social Bookmarking Systems | 2008 | AI Communications | article | DOIURL |
| Abstract: Collaborative tagging systems allow users to assign keywords - so called "tags" - to resources. Tags are used for navigation, finding resources and serendipitous browsing and thus provide an immediate benefit for users. These systems usually include tag recommendation mechanisms easing the process of finding good tags for a resource, but also consolidating the tag vocabulary across users. In practice, however, only very basic recommendation strategies are applied. this paper we evaluate and compare several recommendation algorithms on large-scale real life datasets: an adaptation of er-based collaborative filtering, a graph-based recommender built on top of the FolkRank algorithm, and simple methods based on counting tag occurences. We show that both FolkRank and Collaborative Filtering provide better results than non-personalized baseline methods. Moreover, since methods based on counting tag occurrences are computationally cheap, and thus usually preferable for real time scenarios, we discuss simple approaches for improving the performance of such methods. We show, how a simple recommender based on counting tags from users and resources can perform almost as good as the best recommender. |
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BibTeX:
@article{jaeschke2008tag,
author = {Jäschke, Robert and Marinho, Leandro and Hotho, Andreas and Schmidt-Thieme, Lars and Stumme, Gerd},
title = {Tag Recommendations in Social Bookmarking Systems},
journal = {AI Communications},
publisher = {IOS Press},
year = {2008},
volume = {21},
number = {4},
pages = {231-247},
url = {http://dx.doi.org/10.3233/AIC-2008-0438},
doi = {http://dx.doi.org/10.3233/AIC-2008-0438}
}
|
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| Krause, B., Schmitz, C., Hotho, A. & Stumme, G. | The Anti-Social Tagger - Detecting Spam in Social Bookmarking Systems [BibTeX] |
2008 | Proc. of the Fourth International Workshop on Adversarial Information Retrieval on the Web | inproceedings | URL |
BibTeX:
@inproceedings{krause2008antisocial,
author = {Krause, Beate and Schmitz, Christoph and Hotho, Andreas and Stumme, Gerd},
title = {The Anti-Social Tagger - Detecting Spam in Social Bookmarking Systems},
booktitle = {Proc. of the Fourth International Workshop on Adversarial Information Retrieval on the Web},
year = {2008},
url = {http://airweb.cse.lehigh.edu/2008/submissions/krause_2008_anti_social_tagger.pdf}
}
|
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| Alfi, V., Parisi, G. & Pietronero, L. | How People React to a Deadline: The Distribution of Registrations of Statphys 23 | 2007 | Abstract Book of the XXIII IUPAP International Conference on Statistical Physics | incollection | URL |
| Abstract: In Fig. 1 we show the number of registrations to Statphys 23 ull dots). ch point corresponds to one day and the deadline $T^*$=March 31 was e one corresponding to the early registration and abstract submission. also plot the data corresponding to the a different conference P2DS 17) r which we have rescaled the total number of registration at its n $T^*$. e data of the two conferences are remarkably similar d are characterized by an initial linear behavior followed a strong increase near $T^*$. is strong similarity suggests for a simple mechanism to describe e response of the people to a deadline and we propose have a mple model. e basic idea is that the pressure you have to register is proportional the inverse of the remaining time to the deadline. is gives a probability, $p(t)$, to register at time $t$ that is $p(t) proptorac1(T^*-t)$. om this the number of the registrations at time $t$ is: t)=C0^T^*p(t)dt=A(N_tot)T^*T^*-t). onumber e logarithmic singularity at the end is regularized by discretizing the tegral with an interval of one day and the constant $A(N_tot)$ fixed by the total number of final registration $N_tot$. one can see in Fig. 1 this simple model fits the served behavior extremely well. is permits to predict the total number of registrations ready from the initial slope. result that could have some practical interest. e model only assumes that the probability to register the same for the whole interval of the the remaining time. this respect there is no real tendency to shift the registration wards the deadline. e increase of pressure is just due to the approaching of the deadline. is situation may appear curious because one could have expected stronger pressure to postpone the payment towards the deadline. this respect, however, one should notice that the data in Fig. 1 fer only to the registration and not to the payment of the fee which uld have been done also at a late time. |
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BibTeX:
@incollection{alfi07howpeople,
author = {Alfi, V. and Parisi, G. and Pietronero, L.},
title = {How People React to a Deadline: The Distribution of Registrations of Statphys 23},
booktitle = {Abstract Book of the XXIII IUPAP International Conference on Statistical Physics},
year = {2007},
url = {http://st23.statphys23.org/webservices/abstract/preview_pop.php?ID_PAPER=1122}
}
|
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| Hereth, J. & Stumme, G. | Reverse Pivoting in Conceptual Information Systems. [BibTeX] |
2001 | Conceptual Structures: Broadening the Base. | inproceedings | URL |
BibTeX:
@inproceedings{hereth01reverse,
author = {Hereth, J. and Stumme, G.},
title = {Reverse Pivoting in Conceptual Information Systems.},
booktitle = {Conceptual Structures: Broadening the Base. },
publisher = {Springer},
year = {2001},
volume = {2120},
pages = {202-215},
url = {http://www.kde.cs.uni-kassel.de/stumme/papers/2001/ICCS01.pdf}
}
|
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| Becker, K., Stumme, G., Wille, R., Wille, U. & Zickwolff, M. | Conceptual Information Systems Discussed Through an IT-Security Tool [BibTeX] |
2000 | Knowledge Engineering and Knowledge Management. Methods, Models, and Tools. | inproceedings | URL |
BibTeX:
@inproceedings{becker00conceptual,
author = {Becker, K. and Stumme, G. and Wille, R. and Wille, U. and Zickwolff, M.},
title = {Conceptual Information Systems Discussed Through an {IT}-Security Tool},
booktitle = {Knowledge Engineering and Knowledge Management. Methods, Models, and Tools.},
publisher = {Springer},
year = {2000},
volume = {1937},
pages = {352-365},
url = {http://www.kde.cs.uni-kassel.de/stumme/papers/2000/EKAW00.pdf}
}
|
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| Göbel, S., Heidemann, M., Jasnoch, U. & Stumme, G. | Einsatz von GIS und Formaler Begriffsanalyse in
Altlasten-Informationssystemen [BibTeX] |
2000 | Hypermedia im Umweltschutz. 3. Workshop in Ulm 2000 | inproceedings | URL |
BibTeX:
@inproceedings{goebel00einsatz,
author = {Göbel, S. and Heidemann, M. and Jasnoch, U. and Stumme, G.},
title = {Einsatz von {GIS} und {F}ormaler {B}egriffsanalyse in
{A}ltlasten-{I}nformationssystemen},
booktitle = {Hypermedia im Umweltschutz. 3. Workshop in Ulm 2000},
year = {2000},
volume = {Umwelt-Informatik aktuell, Bd. 24},
pages = {169-179},
url = {http://www.kde.cs.uni-kassel.de/stumme/papers/2000/AKHU00.pdf}
}
|
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| Stumme, G. & Wolff, K. E. | Numerical Aspects in the Data Model of Conceptual Information Systems [BibTeX] |
1999 | Advances in Database Technologies. Proc. Intl. Workshop on Data Warehousing and | inproceedings | URL |
BibTeX:
@inproceedings{stumme99numerical,
author = {Stumme, G. and Wolff, K. E.},
title = {Numerical Aspects in the Data Model of Conceptual Information Systems},
booktitle = {Advances in Database Technologies. Proc. Intl. Workshop on Data Warehousing and},
publisher = {Springer},
year = {1999},
volume = {1552},
pages = {117-128},
url = {http://www.kde.cs.uni-kassel.de/stumme/papers/1998/ER98.pdf}
}
|
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| Stumme, G. | Acquiring Expert Knowledge for the Design of Conceptual Information Systems [BibTeX] |
1999 | Knowledge Acquisition, Modeling, and Management. Proc. 11th European | inproceedings | URL |
BibTeX:
@inproceedings{Stumme1999acquiring,
author = {Stumme, Gerd},
title = {Acquiring Expert Knowledge for the Design of Conceptual Information Systems},
booktitle = {Knowledge Acquisition, Modeling, and Management. Proc. 11th European},
publisher = {Springer},
year = {1999},
volume = {1621},
pages = {275-290},
url = {http://www.kde.cs.uni-kassel.de/stumme/papers/1999/P1997-EKAW99.pdf}
}
|
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| Stumme, G. | Dual Retrieval in Conceptual Information Systems [BibTeX] |
1999 | Datenbanksysteme in Büro, Technik und Wissenschaft. Proc. BTW'99 | inproceedings | URL |
BibTeX:
@inproceedings{stumme99dual,
author = {Stumme, Gerd},
title = {Dual Retrieval in Conceptual Information Systems},
booktitle = {Datenbanksysteme in Büro, Technik und Wissenschaft. Proc. BTW'99},
year = {1999},
pages = {328-342},
url = {http://www.kde.cs.uni-kassel.de/stumme/papers/1999/P2021-BTW99.pdf}
}
|
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| Stumme, G. & Wolff, K. E. | Computing in Conceptual Data systems with relational structures [BibTeX] |
1997 | Proc. Intl. Symposium on Knowledge Retrieval, Use, and Storage for Efficiency | inproceedings | URL |
BibTeX:
@inproceedings{stumme97computing,
author = {Stumme, Gerd and Wolff, Karl Erich},
title = {Computing in Conceptual Data systems with relational structures},
booktitle = {Proc. Intl. Symposium on Knowledge Retrieval, Use, and Storage for Efficiency},
year = {1997},
pages = {206-219},
url = {http://www.kde.cs.uni-kassel.de/stumme/papers/1997/KRUSE97.pdf}
}
|
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| Stumme, G. | Concept Exploration -- Knowledge Acquisition in Knowledge Systems. [BibTeX] |
1997 | book | URL | |
BibTeX:
@book{stumme97conceptexploration,
author = {Stumme, Gerd},
title = {Concept Exploration -- Knowledge Acquisition in Knowledge Systems. },
publisher = {Shaker},
year = {1997},
url = {http://www.shaker.de/Online-Gesamtkatalog/details.asp?ISBN=3-8265-2930-8}
}
|
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